Doorsill



Sept. 24, 1929. v H E BRlCKER 1,729,243

Doon sILL Filed March 24, 1928 FIGLI.

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Patented Sept. 24, 1929 UNITED STATES PATENT OFFICE HARRY E. BRICKER, OFINGOMAR, PENNSYLVANIA, ASSIGNOR TO NATIONAL METAL PRODUCTS COMPANY, 0FPITTSBURGH, PENNSYLVANIA l DOORSILL Application led March 24, 1928.Serial No. 264,337.

My invention is an improvement in onepiece metal door sills or treads,adapted to provide for door mounting and closure, with certain featuresof construction and advantage contributing to prevention of waterentrance to the interior, avoidance of objectionable obstruction overthe threshold, etc., as shall be, more fully hereinafter described. Theobject in view is to provide a onepiece sill which may be fabricated inone piece, adapting it to be laid and secured upon the floor, and usedas a door base in substitution of the usual wooden sill.

In the drawings showing one preferred construction Fig. 1 is a plan Viewof the sill, partly broken away;

Fig. 2 is a cross section on the line II-II of Fig. 1, showing a doorand its weather strip in position over .the sill;

Fig. 3 is a View similar to Fig. 2, omitting the door, and illustratingthe fending action of the sill;

Fig. 4 is a perspective detail view of the weather strip attachment;

Fig. 5 is a view vsimilar` to Fig. 2, showing' a modified constructionofweather strip.

The sill as a whole is made in a continuous strip or piece, of suitablenon-corrosive metal, as bronze, alloy, etc., and by any suitable method,as by extruding the article through a die. One advantage of such methodof manufacture is in giving an initial smooth dense surface, easilyadapting it to polishingby buling, for surface finishing.

The several elemental portions of the sill comprise a middle elevateddoor sill portion 2, an outer sloping base member 3 and an inner roundedor sloping base member 4. The latter terminates inv bearing 'terminals5-6, the lower faces of which conform to a common floor level a forplacement thereon.

The door sill member 2 is spaced upwardly above the base level a aYsuitable distance,

' and its surface, of uniform width, preferably slopes slightly downwardtowards .the outside, as shown. Said surface is interrupted by one ormore longitudinal grooves 7 for tread security against slippage of thefoot.

The in ner portion of the middle member 2 extends 1n the form'l of a webor flange y8,

rounded at its edge and projecting inwardlyl beyond the downwardlyextending web or wall 9 providing an intermediate support for theelevated middle sill portion, and having a floor engaging pedestal 10 onthe level of the outer bearing terminals 5 6, conformingto the iloorline a. l

The inner abruptly sloping base portion 4 extends towards the roundedlterminal 11 l projection 12 and the edge 11. The purpose of such gutteris to collect any water or snow-which may pass inwardly over theelevated sill portion 2, leakage therefor being provided by one or moreports or weep holes 16 extending through the wall 9.V

In addition to the supporting and stabilizing function ,of the pedestalbearingportions 5, 6, 10 and 14, arranged on a common fioor Icontactinglevel, Vthese facilitate the mounting and setting of the entire sill inconnection with any suitable intervening cushioning material, as elasticputty, or the like.

If desired, a thin plate 17 of metal or other suitable material may belaid underneath all or a portion only, as the outer portion, of thesill.

Such plate will protect the lower wood i work, stone, or other floormaterial from the action of moisture, and will carry it olf through oneor both ends ofthe sill, as may be provided. The sill is secured inposition by screws 18 inserted through suitably spaced holes 19 alongthe middle of the elevated part 2.

As thus constructed and mounted, the sill provides for openingand'closing of the door 20, either with or without any supplementalsealing or weather strip device. When the latter is used, it mayconveniently be in the form shown in Figs. 2 and 4 in the shape of anL-shaped metal strip 21 secured to the inner lower edge of the door byscrews 22 with an intervening packing strip 23 of felt, rubber, etc. Thestrip extends below the door edge for abutting contact against the edge11 and the L ange 24of strip 21 retains the packing and rides underneaththe flange 8 when the door is closed, as in Fig. 2.

In Fig. 5, I show a modified construction of weather strip 21a havingthe hooked J terminal 24 engaging the rounded terminal of the ange 8.Such form of strip is secured up underneath the bottom edge of the door,as shown.

The construction of the sill as a whole not only provides the 'featuresand advantages noted, but alsoavoids the danger of presenting anyserious obstruction to the feet of one passing over the threshold ineither direction. The outer sloping wall 3 leads upwardly to the frontedge of the elevated sill surface 2 in a practically continuousunobstructed surace.

At the other side, the general slope of the inner portion 4, whilesomewhat steeper, tends to direct the sole of the shoe upwardly acrossthe open gap between such surface and the rounded ed e 11, effectivelypreventing tripping or stu bing, due to such upward sloping face, as inFlg. 3.

The construction and advantages of' the invention will be readilyunderstood and appreciated from the foregoing description. It is simple,durable, eliicient and inexpensive to manufacture and provides anexcellent one piece door sill having the weather absorbing and otheradvantages described. It may be manufactured in continuous lengths, ofany desired cross sectional dimensions or proportions, and cut to anylength desired for use, and is well and successfully adapted to performits functions in a satlsfactory manner.

What I claim is 1. A one-piece metal door sill formed of a continuouslyintegral parallel sided body having opposite downwardly sloping sidesand a' middle elevated tread having an edge portion extending laterallytowards one of said sides, such side adjacent to the edge portion havingan outer surface sloping towards the edge portion and then roundeddownwardly providing an open gap and extended inwardly underneath theedge portion, the side por-` tion being then vertically disposedunderneath the tread providing a support therefor backward from the edgeportion.

2. In a one-piece metal door sill, the combination with an elevatedtread ortion having an extending rounded edge ange member, of avertically disposed supporting wall

